Spool for filament of a three-dimensional printer



FIG. 1 is a top, front perspective view of a design for a spool for filament of a three-dimensional printer;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a rear view thereof; and,

FIG. 8 is a bottom perspective view of the spool for filament of a three-dimensional printer shown with additional environment.

The broken lines immediately adjacent to the shaded areas depict the bounds of the claimed design, while all other broken lines are directed to environment. The broken lines form no part of the claimed design. 

CLAIM The ornamental design for a spool for filament of a three-dimensional printer, as shown and described. 